Effect of maternal height and weight on risk of preterm birth in singleton and twin births resulting from in vitro fertilization: a retrospective cohort study using the Society for Assisted Reproductive Technology Clinic Outcome Reporting System.

Effect of maternal height and weight on risk of preterm birth in singleton and twin births resulting from in vitro fertilization: a retrospective cohort study using the Society for Assisted Reproductive Technology Clinic Outcome Reporting System.

MedLine Citation:	PMID: 22154767 Owner: NLM Status: Publisher
Abstract/OtherAbstract:	OBJECTIVE: To examine the effect of height, weight, and body mass index (BMI) on the risk of preterm birth of singleton and twin pregnancies conceived by vitro fertilization (IVF). DESIGN: Retrospective cohort study using 2006-2008 data from the Society for Reproductive Technology Clinic Outcome Reporting System (SART CORS). SETTING: SART-associated assisted reproductive technology programs. PATIENT(S): 56,556 singleton and 23,804 twin live births resulting from fresh nondonor IVF cycles. INTERVENTION(S): None. MAIN OUTCOME MEASURE(S): Rates of very early preterm (VEPTB; <28 weeks), very preterm (VPTB; <32 weeks), and preterm birth (<37 weeks) births. RESULT(S): In both singleton and twin births, increased maternal height was associated with a decreased risk of preterm birth. Maternal overweight and obesity were associated with significantly increased risk of VEPTB and VPTB in twin pregnancies. For very obese women (BMI > 35 kg/m(2)) twins were associated with a threefold increased risk of VEPTB (6.1% vs. 2.0%) and a twofold increased risk of VPTB (11.5% vs. 5.9%) compared with women of normal weight (BMI 18.4-24.9 kg/m(2)). CONCLUSION(S): Obesity and short stature significantly increase the risk of VEPTB and VPTB in twins conceived by IVF.

Authors:	Richard P Dickey; Xu Xiong; Rebekah E Gee; Gabriella Pridjian
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Publication Detail:	Type: JOURNAL ARTICLE Date: 2011-12-10
Journal Detail:	Title: Fertility and sterility Volume: - ISSN: 1556-5653 ISO Abbreviation: - Publication Date: 2011 Dec
Date Detail:	Created Date: 2011-12-13 Completed Date: - Revised Date: -
Medline Journal Info:	Nlm Unique ID: 0372772 Medline TA: Fertil Steril Country: -
Other Details:	Languages: ENG Pagination: - Citation Subset: -
Copyright Information:	Copyright © 2012 American Society for Reproductive Medicine. Published by Elsevier Inc. All rights reserved.
Affiliation:	Section of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Louisiana State University School of Medicine, New Orleans, and Fertility Institute of New Orleans, Mandeville, Louisiana.
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